Improvement in spark and dust arresters for locomotives



3 Sheets-Sheet 1.

SAWKINS.

.T. N. SPARK AND DUST ARRESTER FOR LOGOMOTIV'E.

Patented April 11,

.iil? E0 B W m M M TIG, 2.

WITNESSES 1/1; 4% Alia/7m IL PETERS, PHOTO-LITHOGRAPHER. WASHINGTON. o O

3 Sheets-Sheet 2.

J. N. SAWKINS. SPARK AND DUST ARRESTER FOR LOOOMOTIVE. 'No.176,071.

Patented April 11 .lNVENTOR N-PETERS, PNOTOLITMOGRAPHER. WASHINGTON. D C.

3 Sheets-Sheet 3.

I. N. SAW'K INS. SPARK AND. DUST ARRESTER FOR LOCOMOTIV'E. No.176,071. Patented Aprilll, 1876.

WITNESSES INVENTOR I I I Md By Attorneys NIP-TEES. PNOTO-LITNOGRAPHER. WASHINGTON D C UNITED STATES PATENT Orrrcn JAMES N. sAwKINs, or PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN SPARK ANDDUST ARRESTERS FOR LOCOMOTIVES.

Specification forming part of Letters Patent No. 176,07 1, dated April 11, 1876; application filed October 23, 1875.

To all whom it may concern I Be it known that 1, JAMES N. SAWKI'NS, a subject of the Queen of Great Britain, temporarily residing at Philadelphia, in the county My invention consists, first, in combining,-

with the smoke-stack of the locomotive, an adjustable annular deflecting funnel or conductor interposed between the outer Shell and the inner flue, within which the blast and the products of combustion from the furnace are received. The said deflecting funnel serves to carry downward the products of combustion into a water-reservoir, by which all sparks and dust are arrested. The invention further consists in combining with the water-reservoir and deflecting funnel a discharge-pipe and dustrcceiver adapted to conductthe water, dust, and cinders from the chamber within the stack and discharge them upon the ground or upon the rails near the driving-wheels, or to retain the ashes and other matter eliminatedfrom the smoke for use in lieu of sand for increasing the traction of the wheels when occasion may require. The invention further consists in the combination of a cowl or hood of peculiar construction with a smoke-stack, as hereinafter described.

In the accompanyingdrawings, Figure 1 is a side elevation of a portion of a locomotive, illustrating the invention. Fig. 2 is a top view of the same. Fig. 3 is a vertical longitudinal Section of the stack on a larger scale, on the line 3 3, Fig. 4. Fig. 4 is a horizontal section in two planes, indicated by the lines 4 4, Fig. 3. Fig. 5 is a side elevation of the dust-receiver and its accessories. Fig. 6 is a rear view of the same. Fig. 7 is a top view thereof. Fig. 8 is a vertical longitudinal section on the line 8 8, Fig. 7. Figs. 9 and 10 are, respectively, a side elevation and a plan partly in section, illustratin g a modification.

A may represent portions of the frame, B the boiler, O the pilot, and D D driving-wheels of a locomotive of ordinary construction. E represents the smoke-stack, and F a frustoconical cowl placed in horizontal position above the same, with the smaller end forward,

leaving sufficient space above for the passage of the blast and gaseous products of combustion, together with any cinders or dust that may be carried by the blast up through the flue G. The hood H extends downward between the flue-pipe G and shell E, and communicates at its lower end with a dischargefunnel, I, forming a continuation of said hood and fitting within or around it, as preferred, so that it may be slipped up and down to vary the level at which the smoke and other matters are discharged from the said hood and funnel H I. The lower part of the shell E coustitutes a water-chamber, J the discharge-funnel I being set up or down to regulate its depth of immersion and the freedom of draft andinsure a thorough elimination of cinders, 850., from the smoke while the engine is in motion. The lower end of the funnel I is preferably made flaring outward, as shown, and the lower parts of the flue G and shell E forming the inner and outer walls of the annular water-chamber of a corresponding shape. K represents a rack attached to the discharge-funnel I. L is a cogged segment gearing with said rack and operated by an arm, M, and rod N for the purpose of moving the funnel I up or down. Ois a pipe for introducing water into the chamber J. P P are discharge-pipes, through which the water may overflow from the chamber J, together with dust, ciuders, and other solid matters which are separated from the smoke and are constantly stirred up in the water by the action of the blast, The pipes P P communicate at their lower ends with eccentric nozzles Q, which may be turned through the medium of pinions It, by means of segmentracks S and rods T, so as to place the eccentric nozzles Q in communication with the dustreceivers U, as illustrated in full lines in Fig.8, or with discharge-pipes V, as illustrated in dotted lines. q is a flange attached to the lower end of each eccentric nozzle for the purpose or closing the opening into the reservoir U when the nozzle is adjusted to the dischargepipe V. The reservoirs U are furnished with perforated sliding bottoms WV, to permit a free discharge of water, but to retain dust and einders within the reservoirs, if desired. The sliding bottoms are operated by levers X and iods Y, to enable the engineer to discharge the v (w nders on the rails in front of or between the driving-wheels, when occasion may require, in. order to increase the traction of said wheels.

Operation: The conical cowl F creates'a forcible draft upward through the stack," so as to more than compensate for any ob: struction caused by the water in the chamber J. When the engine is standing still the funnel 1 may be thrown up to or above the surface of the water, so as to allow the smoke to pass-011' freely. When the apparatus is in full operation the solid matter carried out of the-furnace with the smoke is thrown under the 'bodyof watercontained in the chamberJ and there retained, theblast agitating and maintaining a constaat ebullition of the water-so as to throw it up and cause it" to passto thedisvided with a most effective-material forscat;

tering on the rails'to increase the traction of the wheels when an. emergency may require it, thus dispensing entirely with the necessity of sand-boxes.

Z are the outlet-pipes from the reservoirs U.

In the illustration shown in Figs. 9 and 10 the reservoirs'U are dispenser-l with, the discharge-pipes being extended down nearly to the rails. and terminatingin eccentric nozzles Q, adjustable by means of rods T, or'equiva lent means, so as to direct the discharge on or oif the rails, as desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is'

1. The combination, with the shell E, of the central flue G, the deflecting hood'H, and the adjustableannularfunnel I," substantially as and for the purposes set forth;

2'. The combination of -th e*waterchamberd,

the su 'iply-pipe =0, and thedisoharge pipes P, the shell Ejfl'ue G, anddetlecti n-g'hood or funnel" H I as -au'd for the purposes set forth.

3'; 'lhereservoirs U, provided with perforated discharge-valves W, in combination-with the dust-"arresting apparatus," constructed to operato s u bstan'tial'ly' as hercii-r 'setiforth 4. The eccentric nozzle- Q, in zcom'binatmn with the-dischargepi-peP, as and for the pur poses-set forth 5. Thefrusto=conical cowl" F; in combination with theshell E, flue 'G, amFdefl'ccting. 'hood :and funnel -H I, substantiallyas zand for; the .purposes'set forth.

.L N.LSAW-K1NS.

Witnesses:

OG-TAVIUS KNIGHT," (J'HAsr J Goocn. 

